The LCP System for intraarticular fractures of the distal humerus: First clinical results

Open reduction and internal fixation represents an effective treatment option for intraarticular fractures of the distal humerus. New preshaped angular stable implants have been developed to further improve reduction and retention in these injuries. The present study evaluates fracture reduction and healing, pain, function and patient satisfaction after open reduction with and angular stable fixation with preshaped implants. A total of 18 patients with a mean age of 55 years (21-83) were treated with open reduction and angular stable internal fixation. Two patients were lost to follow-up (1 died, one refused to be reevaluated). AO classification showed 16 C-fractures (1 x C 1.1; 1 x C 1.3; 5 x C 2.2; 6 x C 3.2; 3 x C 3.3) and 2 B-fractures (B 2.3 and B 3.3). Follow-up included the Mayo Elbow Performance Score (MEPS), Dash Score, elbow anterior-posterior and lateral view X-rays, and measurement of flexion and extension force as % of contralateral side at 90 degrees flexion. The mean follow-up was 11 months. Complete union was achieved in all investigated patients radiographically. There were no cases of primary malposition or secondary dislocation. Clinical results were good to excellent with a mean of 90.3 (+/- 11.7) points (MEPS) and the mean Dash Score was 23.8 (+/- 11.5) points. Range of motion was recorded with a mean flexion of 127 degrees (+/- 21 degrees) and a deficit in extension of 16 degrees (+/- 10 degrees). Evaluation of mean flexion force was 72.2 % (+/- 25.0) and mean extension force was 71.6 % (+/- 23.6). First clinical and radiographical results of open reduction and angular stable fixation with anatomically preshaped implants are promising. Due to improved fixation technology, early postoperative mobilization is possible with good arc of motion and flexion and extension force.